No guide for this hunt, but they had an outfitter supply them with tents, cots, etc and air transportation once they got to dead horse
Great place to Caribou hunt if you have mileage or don't mind paying the air fare is Adak Island in the Aleutians. Military shut down the base there so there are bunkers all over the island you can stay for free. Caribou are on a treeless (but some steep elevation gains) Island. It's always been popular for waterfowl, but Adak caribou hunts are gaining in popularity.
Denali Hwy is a good place as well as you can drive the road and hunt in relative proximity to your transportation, which is rare in most of AK. It's on the road system back to Anchorage.